Perkins, David R. IV
Funding for this research was provided by:
National Science Foundation (0947982)
Article History
Received: 30 June 2015
Revised: 23 January 2016
Accepted: 2 February 2016
First Online: 23 February 2016
Compliance with ethical standards
:
: Any opinions, findings, conclusions, or recommendations expressed in this material are those of the author and do not necessarily reflect those of the National Science Foundation.